I would like to discuss this a bit further. I do not think there is scripting in PES 2015, but I do feel that there are two types of cheesy goals made by the AI. Since you guys don't find issues with any CPU goals, maybe you can help me here.
The first type of CPU goal that smells bad to me is a quick through ball from a distance. When the CPU player receives the pass inside the box, it's already too late to do anything. I don't think it's possible to always close down the player with the ball to stop such passes coming in. I have tried to adjust my tactics to reduce the number of such through balls. If the opponent has a single striker, I mark him with my CDM (my current formation is 4-1-4-1). I have changed "numbers in defence" to "many." I have dropped my defensive line, and made my defensive formation more compact - the latter should decrease the amount of free space inside the box, right? But still these through balls are the most common form of goal scored by the CPU.
I know some players approach this issue by taking control of a defender, and using "teammate pressure" to close down the players having possession. I absolutely hate automated defending, so I avoid this approach. I think you should be able to be the man in the front, and the AI would do a decent job in the back trenches (it does a better job in Fifa 15). Currently in PES, however, the lateral gaps between the defenders are fixed, even when runs happen. That is the underlying reason for the large number of through balls seen. It is also too easy to utilize this on the attack, even against superstar level.
So any ideas on how to approach my problem no 1?
The second type of CPU goal where I don't usually think I deserved it comes from a winger bulldozing in from near the corner flag. I can see it coming from far away. He starts to dribble into the box, and I feel that the only thing I can do to stop him is to foul. This is the only occasion where I have started to use "teammate pressure" - like I told above, I hate automated defending, and don't even press "pressure" for extended periods of time - but even having a teammate to assist is often not enough to tame the tank coming in. I mean, they must have a specialized algorithm for a winger making his way into the box. Then, usually he passes to a CF who has ample space in the middle of the box. The fact that the winger can dribble his way in may have something to do with the fact that since he is moving laterally, either he or my defender is blocking the view from the camera. It may therefore be difficult to see, for example, the best time to tackle.
Any good ideas on how to stop the winger tank?